id:A085049 - OEIS Search Results

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a(1) = 1, then the next n numbers are prime if n is composite, else are composite if n is a prime.

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1, 4, 6, 8, 9, 10, 2, 3, 5, 7, 12, 14, 15, 16, 18, 11, 13, 17, 19, 23, 29, 20, 21, 22, 24, 25, 26, 27, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A077649 A132025 A123870 this_sequence A019516 A031977 A091985` `Adjacent sequences: A085046 A085047 A085048 this_sequence A085050 A085051 A085052`
	KEYWORD	`easy,nonn`
	AUTHOR	`Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Jun 20 2003`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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